Preheat the oven to 425 degrees(F).
In a liquid measuring cup, measure out the non-dairy milk and then pour in the apple cider vinegar, and whisk to combine. Set aside for a few minutes while you prep the dry ingredients.
Now, in a large mixing bowl, sift the flour, baking powder, and 1 teaspoon of cinnamon, reserving the rest. Then stir in the salt.
Then pour the non-dairy milk, apple cider vinegar mixture into the bowl as well as the vanilla, maple syrup and vegan butter.
Whisk to combine until everything is completely combined and smooth.
Take a large sheet pan(11x16 or 11x17 inch) and line with parchment paper.
Pour the batter onto the sheet pan and smooth the batter out evenly.
Then in a small mixing bowl, stir together the cane sugar and the remaining 1 1/2 teaspoons of cinnamon.
Sprinkle about half of the cinnamon sugar over the batter, then using a knife or rubber spatula swirl the cinnamon sugar into the batter. Then sprinkle the rest of the cinnamon over the top of the batter.
Bake for 15 to 17 minutes or until a toothpick comes out clean from the center of the pancakes.
While the pancakes bake, make the maple butter. Add the vegan butter and maple syrup to a medium sized mixing bowl or the bowl of a stand mixer. Then beat with a the whisk attachment of a hand mixer or the whisk attachment of the stand mixer.
Whip until the butter and maple syrup are light and fluffy. It may take a few minutes. Put the maple butter in the fridge until ready to serve.
Once the pancakes are baked, let them cool for a few minutes, then cut into squares. Serve with the maple butter and maple syrup if desired.